Preprocessing Directives C# Tutorial

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  4. Use the Conditional attribute with define
#define USE_METHOD_1
using System;
using System.Diagnostics;
class MainClass
{
  [Conditional("USE_METHOD_1")]
  public static void Method1()
  {
    Console.WriteLine("In Method 1");
  }
  public static void Main() 
  {
      Console.WriteLine("In Main");
    Method1();
  }
}
In Main
In Method 1